Porsche Cayenne 2021 — technical service bulletin
Bulletin No. 2031-21-1 · NHTSA communication 11026407 · issued Nov 26, 2025
Technical service bulletin
communication type
Electrical System
component
2021
model years
6
vehicle entries
Official summary
Technical information for Vehicle Intermittently Not Available Via Remote Access Services: Re-program Connect Control Unit
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.